多波高斯束叠前深度偏移速度分析
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| Published in | 应用地球物理：英文版 Vol. 11; no. 2; pp. 186 - 196 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2014
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| Subjects | |
| Online Access | Get full text |
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| Author | 韩建光 王赟 韩宁 邢占涛 芦俊 |
|---|---|
| AuthorAffiliation | 中国科学院地质与地球物理研究所,北京100029 中国科学院大学,北京100049 中国科学院地球化学研究所,贵阳550002 西南大学资源环境学院,重庆400716 中国地质大学（北京）,北京100083 |
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| DocumentTitleAlternate | Multiwave velocity analysis based on Gaussian beam prestack depth migration |
| EISSN | 1993-0658 |
| EndPage | 196 |
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| Notes | Han Jian-Guang,Wang Yun,Han Ning,Xing Zhan-Tao,Lu Jun,Institute of Geology and Geophysics, Chinese Academy of Sciences,University of Chinese Academy of Sciences,Institute of Geochemistry, Chinese Academy of Sciences,College of Resources and Environment, Southwest University,China University of Geosciences （Beijing） Gaussian beam migration;multiwave;migration velocity analysis;common-image gathers 11-5212/O Prestack depth migration of multicomponent seismic data improves the imaging accuracy of subsurface complex geological structures. An accurate velocity field is critical to accurate imaging. Gaussian beam migration was used to perform multicomponent migration velocity analysis of PP- and PS-waves. First, PP- and PS-wave Gaussian beam prestack depth migration algorithms that operate on common-offset gathers are presented to extract offsetdomain common-image gathers of PP- and PS-waves. Second, based on the residual moveout equation, the migration velocity fields of P- and S-waves are updated. Depth matching is used to ensure that the depth of the target layers in the PP- and PS-wave migration profiles are consistent, and high-precision P- and S-wave velocities are obtained. Finally, synthetic and field seismic data suggest that the method can be used effectively in multiwave migration velocity analysis. |
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| PublicationDate | 2014 |
| PublicationDateYYYYMMDD | 2014-01-01 |
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| PublicationTitle | 应用地球物理：英文版 |
| PublicationTitleAlternate | Applied Geophysics |
| PublicationYear | 2014 |
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| SourceID | chongqing |
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| StartPage | 186 |
| SubjectTerms | 偏移速度分析 共成像点道集 多波 高斯束偏移 |
| Title | 多波高斯束叠前深度偏移速度分析 |
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